Improvement in saw-sharpeners



O. MARTIN.

SAW-SHARPENER.

Patentefi April 11, 1876.

N-FETERS. PHOMTflOGRAPHER. WASHINGTON By C.

" UNI-TED STATES PATENT Darren,

ORIN MARTIN, OF BLOOMFTIELD, IOWA.

IMPROVEMENT IN SAW-SHARPENERS.

Specification forming part 6f Letters Patent No. 175,837. dated April11, 1876 application 'filed November 17, 1875.

To all whom it may concern Be it known that I, ()RIN MARTIN, ofBloomfield, in the county of Davis and State of Iowa, have invented aSaw-Filing and Setting Machine, of which the following is a specifitheteeth by the automatic stroke of a hammer and a punch upon an adjustableanvil. It consists in an adjustable sliding file-holder,

an adjustable suspended frame carrying the file-holder and drivingmechanism, a sliding saw-carrier, and a hammer and anvil being formed,mounted, and combined, upon a portable frame, as hereinafter fully setforth.

Figure 1 of my drawing is a perspective View, giving-a general idea ofthe construction and operation of my invention.

A is the base of the frame upon which my machinery is mounted. It may bewood or metal, and vary in dimensions to suit machines of differentsizes.

B3 are the corner posts on the front side of theframc. U is one of therear corner posts. D is the driving-wheel journaled to the end of theshaft a, which shaft has its bearing in the frame midway between theposts B. E is a pinion actuated by the driving-wheel D. It is rigidlyfixed on the end of the shaft b, which shaft has its bearings in thesuspended auxiliary frame that carries the fileholder. c d are cornerposts representing the auxiliary, adjustable, sus' pended frame. F is arock-shaft, operated by an arm extending therefrom to a cam or pin onthe driving-wheel, to work the setting device. f f are parallel railsrigidly fixed upon-the frame B G tosupport the sliding sawcarrier G. Hrepresents a saw clamped upon the top of the carrier G. J is the hammerwhich strikes the punch or setter upon the saw-teeth and anvil. g is acrank-wheel rigidly fixed on the end of the shaft 1), opposite thepinion E, to impart a vertical reciprocating motion to the file-holderand file. K is a rack rigidly fixed to the posts B. It is concentricwith the axle a that supports the suspended holder.

frame 0 d, and serves as a means of holding that adiustableframe atvarious angles. A latch or. set-screw carried by the suspended frameengages the rack Kand locks lhe'frame to the rack.

It can be adjusted in a collar to hold thedifi'erent edges of the fileto the saw.

Fig. 2 is a transverse sectional view, givingv details of constructionand illustrating the means employed to impart both vertical and lateralmotion to the fileholder and file.

The driving-wheel D on the shalt 01v actuates the pinion E on the shaft1). The crank-wheel g, on the opposite end of. the shaft 12, isconnected with the file-holder why a pitmau, n. The file holder m slidesvertically in suitable bearings fixed in or on the post d of thesuspended frame. L is an adjustablecam-wheel rigidly secured on theshaft 11' by a set-screw,

. to imparta lateral motion to the file. 19 is a lever, bifurcated atits lower end, to engage the cam-wheel L. It is pivoted near its lon-.gitudina'l center to a bearer extendipg from the posts a. At its top itis linked or hinged toan .abjustable collar, r, that-is rigidly securedto the shaft a by a set-screw. The extent of the lateral motion ofthefile can be regulated as required for difierent saws by. adjustingthe cam-wheel L and coll-arr on their respective shafts b and a.Eachrevolution of the cam L moves the entire suspended frame 0 d,file-holder, and file to and from the saw simultaneously with the actionof the crank-wheel g, which imparts a reciprocating vertical motion tothe file-holder and file. An automatic movement is thus given to thefile very similar to the motions required in filing a saw by hand. i

Fig. 3 is a longitudinal sectional view, illustrating the construction,application, and operation of my setting device.

8 is an adjustable anvil secured in any suit-- able manner, contiguousto the inside rail f, in such a position that the saw-teeth will extendover it as the saw is' moved with the carrier G. t is a punch or settersuspended in a suitable frame over the anvil s. u is a crank oradjustable arm projecting from the rock-shaft F. vis a prop linked orpivoted to the end of the arm u, and reaches up to the helve of thehammer J to lift the hammer.

h is the top handle of the file- A, suitable spring" connected. with theham mer forces the hammer down to strilievthe setter t when the prop 'uis withdrawn. w is a weighted pawl connected with the sawment of the sawas required for the operation of the file. When the arm 6 projectingfrom the opposite end of the shaft F" is engagedby the pin projectingfrom the driving-wheel D;

the shaft F is rocked thereby and the prop v. pushed upward to lift thehammer J, and the.

pitman m is simultaneously pushed'forwardby the arm 3 to move thesaw-carrier G" by means of the griping. weighted pawl'w on its frontend.

From the descriptionsand'functions of the different parts set forth, itis obvious that a saw may be clamped upon the saw=carrier G and made topass the anvil and file to have 7 its teeth set andfiled by simplyturning'th'e driving-wheel D, and. that the suspended frame' carryingthe file may be readily adjustmay be required fordifierenttormsof sawteeth. Each revolution of the'pinion=E 'draws" the file down overthe'saw andliftsit away and up again.- The relative diametersofthe eachforward motion ofthe. sawmarrierand saw.- When. theJsaw has passedthroughthe machine; once" it is turned in the-carrier and'passedthroughagain to file and set the teeth completely.

carrier G in such a manner as to perform the I claim as my invention-1.. In a saw-filing machine, the shaft a, carryin'g -the"driving'wheelD; and the adjustable collar 1", in combination with the suspendedframec d carryingtheshaft b, pinion E, camwheel' L, pivoted lever p, andcrank-wheel g,

substantially as described, to impart vertical and also lateral motionto a file.

2. Thecombinationofthe'sliding file holder him; the pitmah n,crank-wheel g on the shaft :12, and the suspended vibrating frame 0 d,substantially as and for the purposes specified.

V 3. The combinationthesaw oar-rier G, traclvrail's ff; adjustable anvils; setter t, hammenJ, roek 'shaft F; carrying the-propv-and arms and? e,and: thend'riving wheel 1),

having pinsorcams'toi engage' the-arms,- substantially as described, toset the teeth=of the saw.

4-. The rock sh'aft"-F having the: adj list-able .arm= u, carrying' the"prop 'v, in' combination :withthe hammer J", substantially as a'nd'forthe purposesshown andiidescribed.

ed'to hold thefile at an y angle desired and as E 5; The rook-shaftFhaving' the arm y, in

combination with the adjustable: pitman w, gwei'ghted pawl w, and sawcarrier' G substantia'lly as' and" for the purposes: shown anddescribed". 1

pinion E and' (lriving-wheel' D may-vary to determine thenumberoffile-cuts or strokes to each revolution ofth'e driving-wheelandv GRIN MARTIN.

Witn'esses z D: R. ALLENDER; J. B: WEAVER;

